Steam-generator



(No Model.)

J. WALP.

STEAM GENERATOR. No. 353,996. Patented Dec. '7, 1886.

WITNESSES IJV VEJVTOR .j' ac WMQ WWLW MM UNITED STATES PATENT rrrcE.

JAMES \VALP, OF LEHIGHTON, PENNSYLVANIA.

STEAM-GENERATO R.

SPECIFICATION forming part of Letters Patent No. 353,996, dated December'7, 1886.

Application filed April 14,1886. Serial No. 198,823. (No model.)

To all whom it may concern.-

Be it known that I, JAMES WALP, a citizen of the United States, and a resident of Lehighton, in the county of Carbon and State of Pennsylvania, have invented certain new and useful Improvements in SteamGenerators; and I do hereby declare that the following is a full, clear, and exact description of the invention, which will enable others skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawings, which form a part of this specification, and in which Figure l is a vertical sectional view of my improved steam-generator. Fig. 2 is a horizontal sectional view of the same on line or m,

Fig. l; and Fig. 3 is a similar view on line y 3 Fig. 1.

Similar letters of reference indicate corresponding parts in all the figures.

My invention has relation to steam-generators and it consists in the improved construction and combination of parts of a steamgenerator having a lower boiler provided with it and the lower boiler, as hereinafter more fully described and claimed.

In the accompanying drawings, the letter A indicates the outer casing or sh ell of the boiler, which is cylindrical and provided with an aperture, B, in the center of its top, and with a man-hole or hand-hole, C, in one side, and an aperture, D, for the furnace-door E.

The lower boiler, F, consists of an annular portion, G, surrounding the furnace or fireplace H, which is provided at its bottom with a grate, I, of suitable construction, and the upper portion of the lower boiler is provided with a series of vertical flues, J, opening through the crownsheet K of the furnace, and opening at the top of the boiler, being arranged in concentric circles around the central cylindrical magazine, L, which extends through the top of the lower boiler. The chute M, which extends from the furnace-door into the furnace, passes through the annular portion of the lower boiler.

The upper boiler consists of an upper portion, N, which is constructed with a central cylindrical magazine, 0, which extends through the top of the outer shell or casing and downward, forming a flange, P, resting upon the upper end of the lower magazine, and of a lower annular portion, Q, which surrounds the lower boiler, forming a space between it, and extending to a short distance from the bottom of the shell, forming a space between the said bottom and its lower end. The upper portion of the boiler is formed with a series of vertical flues, R, and the chute leading from the furnace-door into the furnace passes through the lower end of the annular portion of the upper boiler.

The annular portion of the upper boiler is formed with an aperture, S, which registers with the hand or man hole in the outer shell, and which admits of the space between the top of the lower boiler and the bottom of the upper boiler being cleaned through the aperture. The annular portion of the upper boiler is also formed with apertures T, through which pass curved pipes U, the upper ends of which open in the upper portion of the upper boiler, while their lower ends, after passing through the apertures in the annular portion of the upper boiler, open into the upper end of the lower boiler. The lower portion of the annular portion of the upper boiler is also provided with pipes V, which open in the said end, and open into the lower end of the annular portion of the lower boiler, passing under the lower end of the annular portion of the upper boiler, and one of these pipes has the feed-pipe WV opening intovit.

The steam-pipe X opens at the upper portion of the upper boiler and passes through the top of the shell, and the smoke-flue or smoke-stack Y opens at theupper end of the shell.

The upper magazine, which passes through the top of the shell at its center, and which is provided with a suitable cover, is provided with a series of apertures, Z, opening into the space between the top of the shell and the top of the upper boiler, and the gas which will IOO upon the magazine above the top of the upper boiler, and this ring is provided with a number of radiating arms, B, whichare formed with damper-plates C upon their ends, which may cover the upper ends of the fiues in the upper boiler, and a handle, D, or lever is secured to the ring and projects out through a horizontal slot, E, in the shell, the said slot having a plate, F, covering it and sliding with the handle, and it will be seen that by shifting the said handle the dampers may be slid, together with the ring which turns upon the magazine, so that the upper ends of the fines in the upper boiler may either be covered or uncovered.

The furnace is fed by the magazine, which is filled, and which will allow the fuel to pass down into the furnace in the same manner as in a base-burner stove, and the draft may be regulated by suitable draft-apertures in the ash-pit and by the furnace-door,-and the products of combustion will pass from the fireup through the vertical lines in the lower boiler, heating the water in this boiler.

If the dampers are closed, the draft,with the products of combustiomwill pass down under the lower end of the annular portion of the upper boiler, and thereupon upward between the shell and the boiler and out through the smoke-pipe; but if the dampers are open the draft will pass directly up through the upper boiler, through the vertical lines of the same, and out at'the smoke-pipe.

The water from the upper boiler will pass down into the lower boiler and be heated, and will be forced again into the upper boiler, thus circulating through the communicating-pipes, and the steam collected in the upper portion of the upper boiler will be superheated by the products of combustion passing around and over the said boiler or through the fiues of the same, so that the water will principally be boiled in the lower boiler and in the lower portion of the upper boiler, and the steam will collect in the upper portion of the'upper boiler and be superheated there.

Having thus described my invention, I claim and desire to secure by Letters Patent of the United States- 1. In a steam-generator, the combination of a lower or inner boiler having the furnace within it, and having vertical fines, an upper or outer boiler having an upper portion placed some distance above the lower boiler, and an annular lower portion surrounding the lower boiler and reaching to a short distance above the bottom of the lower boiler, and formed with a number of vertical flues in the upper portion, a shell surrounding the boilers and number of dampers covering the upper ends of the fines of the upper boiler, and having means for operating them simultaneously, as and for the purpose shown and set forth.

2. In a steam-generator, the combination of a boiler portion. having a number of fines arranged in a circle, and having a central magazine, with a ring turning upon the magazine, and provided with a number of radiating arms provided with damper-plates fitting over the ends of the fines, and having an arm or handle for turning it, as and for the purpose shown and set forth.

3. In a steam-generator, the combination of a lower boiler having an upper portion provided with vertical fines and with a central magazine, and having a lower annular portion surrounding the furnace, an upper boiler consisting of an upper portion having a circular series of vertical fines, and a central magazine having its lower end extended and resting upon the upper end of the lower magazine, and having a lower annular portion surrounding the lower boiler and extending to adistance from the bottom of the same, pipes connecting the upper and lower portions of the boilers, an outer shell or casing surrounding the boilers, forming a space between them, and having a smoke-stack opening at its top, and having a furnace-door at-its lower portion, provided with a chute-opening through the annular portions of the boilers intothe furnace, and a ring turning upon the upper end of the upper magazine in the space between the shell and the top of the upper boiler, and having radiating arms provided with damper-plates covering the upper ends of the fines of the upper boiler, and havinga handle sliding in a slot in the shell, as and for the purpose shown and set forth.

In testimony that I claim the foregoing as my own I have hereunto-affixed my signature in presence'of two witnesses.

JAMES WALP.

Witnesses: v

SAMUEL WALP, J. A. WALP.

having the smoke-stack opening into it, and a 

